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flow rate vs flowrate

"Flow rate" and "flowrate" are both correct, but the contexts in which they are used are not the same. "Flow rate" is more commonly used when referring to the rate at which a fluid passes through a system, while "flowrate" is a single word often used in technical or scientific contexts.
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Explained by Gregg
Editor at TextRanch

Last updated: September 03, 2024

flow rate

This phrase is correct and commonly used in English, especially in the context of fluid dynamics and engineering.

Use "flow rate" when referring to the rate at which a fluid passes through a system, such as in fluid dynamics, engineering, or environmental science.

Examples:

  • The flow rate of the river was measured in cubic meters per second.
  • Increasing the flow rate of the coolant improved the efficiency of the system.

Alternatives:

  • rate of flow
  • fluid flow rate
  • velocity of flow

flowrate

This phrase is correct, but it is less common and typically used in technical or scientific contexts.

Use "flowrate" as a single word in technical or scientific contexts to refer to the rate of flow of a fluid or substance.

Examples:

  • The flowrate of the chemical reaction was carefully monitored.
  • The flowrate sensor measures the speed of the fluid passing through the pipe.

Alternatives:

  • flow speed
  • flow velocity
  • flow volume

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